Vaillant ecoCRAFT exclusive VKK GB 1206/3-E R1 Installation And Maintenance Instructions Manual page 35

No. Work
1 Perform a test operation of the product and heating installation, including hot water generation,
and purge the system once more if necessary.
2 Isolate the product from the power mains and close the gas supply.
3 Remove the front casing.
Carry out a visual check to ensure that the heating circuit is leak-tight, and a functional check of
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the automatic air vent.
Carry out a visual check of the expansion relief valve. No blockages or pipe connections must be
detected at the expansion relief valve. Ensure that the correct expansion relief valve, tundish and
5
line are present. The tundish must be visible. There must be no isolator between the gas-fired
floor-standing condensing boiler and the expansion relief valve.
6 Remove the burner assembly
7 Clean the combustion chamber and, in doing so, rinse the condensate siphon.
8 Clean the burner and check it for damage.
9 Check the distance between the electrodes and between the electrodes and the burner.
10 Check the electrodes for deposits. If required, replace the electrodes.
Check the seals on the condensate tray and on the inspection opening for damage. Replace any
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damaged seals.
12 Clean the condensate collector.
13 Check the hose to the flue gas pressure monitor for dirt and leak-tightness.
14 Check the hoses leading to the combustion air pressure monitor for dirt and leak-tightness.
Check the dust filter in the supply air box for dirt and damage. If necessary, replace the dust
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filter.
16 Reinstall the burner assembly. Caution: Replace the seal.
17 Check the condensate siphon in the product and, if required, fill the siphon.
18 Open the gas isolator cock, reconnect the product to the power mains and switch it on.
19 Check the ignition and combustion behaviour under D.44
20 Check the CO₂ content and adjust this, if required.
21 Check the product for gas, flue gas, hot water and condensate leaks, and repair if necessary.
22 Check all of the safety devices.
Check that the flue gas pressure monitor is working correctly by completely blocking the flue gas
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with flue gas restrictors. Carry out a visual check of all hoses and measuring nipples.
24 Check the control equipment (external controller) and adjust this, if required.
25 Measure the load.
26 Record the inspection/maintenance work carried out.
27 Install the front casing.
28 Check and, if required, correct the system pressure.
29 Check the general condition of the product. Remove any general dirt from the product.
*Note: For those appliances which are not part of an annual service agreement/policy, maintenance must be carried out at least every 5
years.
*Note: If fitted: Maintenance work must be carried out on the domestic hot water cylinder every five years, irrespective of the heat gener-
ator.
0020149561_01 ecoCRAFT exclusive Installation and maintenance instructions
Appendix
Mainten-
ance
Inspection
(must be
(annual) carried out
at regular
intervals)*
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